Organ-pipe.



R. Y. BARROWS.

ORGAN PIPE.

APPLICATION FILED 001227, 1911.

Patented Oct. 7, 19 13.

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W M W% Mm nm 0 M 9 4 5 34-400mm; 35 A 61-01140, 0 iv EM'ZZ-MQW 50 frontof the block a and just beneath the lip .d is

v UNITED STATES PATENT OFFICE.

ROBERT Y. BABRQWS, F RUTHERFORD, NEW JERSEY, ASSIGNOR OF ONE-HALF TOGEORGE E. HABMAN, OF GLEN RIDGE, NEW JERSEY.

ORGAN-RIPE.

Specification of Letters Patent.

Patented Oct. '7, 1913.

Application filed octoberzz, 191;. Serial No. 657,128.

To all whom it may concern Be it known that I, ROBERT Y. BARRows,

' a citizen of the United States, and a resi speak out of tune.

65 tion 0 The present invention embodies a practic'al'ap lication of myearlier one, and shows how tlie lattermay be. applied to anexisting setof organ pipes without difiiculty or V inconvenience. Moreover, theimprovements are also concerned with the appllcation of the invention tonew pipes.

In my earlier patent, the slit through which the. a'r issues to causethe pipe to speak, was shown as being divided up into one or moresections so as to rovide a shortened slit or slits and control in 'meanswere also shown whereby the air mlght be made to issue through one ormore of these slits to produce a different tone quality from that of theoriginal pipe, although of -the same pitch. In accordance with thepresent improvements, an additional slit 15 provided for the same purose and it ha the advantage of leaving t e originalsli unchanged and ofbeing made narrower'than the original slit to reduce the thickness ofthe sheet of air issuing therefrom, all of which. will be understoodupon reference to the particulardescription of the same whichv follows.

In the drawings which illustrate the invention as applied to woodenpipes, Figure 1 is a view in central vertical section of 'a wooden pipehaving the invention applied. thereto, and Figs. 2 and 3 arerespectively a view in front elevation and a view in section asindicated by the line 3-3 in Fig. 1.

On reference to the drawings, 1t will be seen that the port-ion of thepipe right in rovided with a wind passage b and slit whereas in theordinary wooden organ pipe it will be recalled that this porthe pipe issimply a solid piece of dated piece m, the latter simply servin wood,usually referredto as the ca and forms with the front edge of the look athe usual slit 0 from which the wind is discharged across the mouth ofthe pipe from the space 0 underneath the block. In the present case,-the old plain cap has simply been removed and a new cap substitutedhaving the air passage and slit, as aforesaid. In constructingthis cap,a plain piece of wood like the old cap nay be cut at the topto'receivean adjustable piece mv and bored from the bottom for the airpassage b, the latter being broadened out at the top to supply the wholelength of the slit which is determined by the width of the piece m. Forconvenience in cutting the air passage and forming the slit, it'ispreferable-to out said passage clear through to the rear of the cap" andthen glue a relatively thin piece a to the rear of the cap. The iece n,as can readily be seen from the drawlng, forms two slits, one with theblock a, which is the usual slitof" the pipe ,a'nd'extends substantiallythe full width thereof, and the other with the adjustable piece m whichextends only part way across the pipe. The length of the slit 5 maybechosen to produce the particular power and tone quality of the pipedesired. Moreover, the width of the slit b ma .be adjusted through thepiece at in or er to provide the precise narrowness of slit required toreduce the quantity of the air delivered by the desired amount. Ofcourse,.the slit 6 may be cutin the cap itself without providing anyadjustable as a convenient means of constructing an adjusting the slit.Where said piece on is'em loyed and has been adjusted in the desireposition, it will generally be permanently secured to the cap in somesuitablem'anner as, for instance, bygluing. I r

It will be understood, from a reading of my prior Letters Patentreferred to above, that the two slits receive their wind supplyindependently and that means are provided to cut off the wind supply ofeither at will.

For instance, in the present case, the space 0 underneath the blockcommunicates with the wind chest 0 through its foot 9, while thepassage 1) communicates with the wind chest through a second foot f orsome other suitable means; and sliders or stops it and i are provided tocontrol eacha complete set of feet, that is, one slider for'all the feet9,

and one for all the feet f. It will be understood, of course, that thesliders h and 2' are independently connected with stop-handles at thekeyboard or console, in the usual manner. Thus it will be seen that byclosing the slider 2' and opening the slider 72, all the pipes in thestop will speak their normal tone, while by opening the slider i andclosing the slider h, their tone will be changed in quality, and reducedin power. And these changes are produced with absolutely no change inpitch. The slit 5 will 'enerally be adjusted and then fixed, in thefirst instance, to determine the thickness of the sheet of air deliveredtherethrough; in addition to this primary adjustment, it is desirable toprovide some means for regulating the capacity of the air passage 6which connects the source of wind supply with the slit .71 Suchregulating means may consist, for instance, of a plug, as 6 provided ineach cap and extending into the air passage 7). Being accessible fromthe outside, these plugs may easilybe moved so as to restrict more orless the corresponding passages. It is obvious that this regulating ofthe capacities of theair passages may be efi'ected by any of the methodsin common use and well known to organ builders.

It will be understood that other constructions of cap may be provided toembody a slit and an air passage, and be substituted for the old plaincaps in organ pipes, and also that two or more of these additional slitsmaybe provided in the cap to produce the result described in myaforesaid Letters Patent; and further that any of said additional slitsmay be sub-divided to control say one-third or two-thirds or some otherfraction of the slit as shown with respect to the original slit in myaforesaid Letters Patent; but all such caps are considered to be withinthe scope of the present invention. These. caps make it possible easilyto apply the present invention, as well as that set forth in my priorLetters Patent aforesaid, to existing wooden pipes; for the only changerequired is to substitute the new caps for the old ones and connecttheir air passages with the wind chest. Finally, it is understood, ofcourse, that the invention is not limited to application in wooden organpipes.

I claim as my invention:

1. An organ pipe having a mouth, and

sheetsof air across said mouth, in combination with a wind-chest,independent passages to deliver air from the wind-chest to therespective slits, and-means to control the delivery of air through eachpassage independently of that through the other passage. 3. Thecombination with a wind-chest, an

organ pipe, two hollow feet forming passages from the wind-chest to thepipe, and a slider for opening and closing the passage in each foot,said pipe having a mouth and being provided with two parallel slits ofdifferent length in which said passages terminate respec ively, and eachof said slits being adapted to deliver a sheet of air across said mouthto cause the pipe to speak.

4. The combination of a wind-chest, an organ pipe, and means fordelivering air from the chest to the pipe, said pipe having a lip, a capand a block, the lip and cap forming a mouth for the pipe and the capand block forming the normal slit of the pipe, the topedge of the capbeing provided with a second slit and both of said slits communicatingwith the aforesaid means for delivering air vfrom the chest to the pipe,and means to control the delivery of said air through one slitindependently of that through the other slit.

5. An organ pipe having a mouth, and provided with a slit to deliver asheet of air across said mouth and a second slit parallel to the firstslit but of a different length and also adapted to deliver a sheet ofair across said mouth, in-combination with a windchest, and means todeliver air from the wind-chest through one slit independently of thatthrough the other slit.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

- ROBERT Y. BARROWS;

Witnesses:

LUcIUs E. VARNEY, JOHN W. THoMrsoN.

